Liam Alan Millar (born September 27, 1999) is a Canadian professional soccer player who plays as a winger for Swiss Super League club Basel and the Canada national team. He featured in the youth ranks of Brampton Youth SC and North Mississauga SC before moving to England to join Fulham Academy aged 13. After three years with Fulham, he joined the Liverpool Academy in 2016.

Millar's preferred position is as a number nine, but he has been utilised in various roles with Liverpool due to his flexibility. He has been noted for his ability on the left flank. In August 2016, manager Neil Critchley said: "He's a goalscorer. He can run down the side of defenders, he runs in behind, he gives them real problems with his movement and he's a good finisher off both feet. He's got a good brain, good awareness, very calm and can finish. He's a good player, a good all-round player."